IE9 introduced a new address bar that is located on the same row as the tabs that are open, that may be useful for some people, but for everyone else it's just annoying, luckily they added an easy way to change it back to the same way it was before, all you have to do is right click on any tab or the tab area and you'll get a "show tabs on a separate row" option at the bottom
And that's it, you get your old address bar back :)
